1/5x=4.2

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Solution for 1/5x=4.2 equation: 



1/5x=4.2

We move all terms to the left:

1/5x-(4.2)=0



Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R



We add all the numbers together, and all the variables

1/5x-4.2=0

We multiply all the terms by the denominator


-(4.2)*5x+1=0

We multiply parentheses

-21x+1=0

We move all terms containing x to the left, all other terms to the right

-21x=-1

x=-1/-21

x=1/21

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